Metal-reducing machine.



I B. M. W. HANSON. METAL REDUCING MACHINE.

APPLIOATIOH FILED APR. 16, 1913.

. Patented Jan. 20, .1914.

L T E E u S T E B H s 2 murmu I L IIIFI J a i i 4 1M J B. M. W.-HANSON.

METAL REDUCING MACHINE. APPLICATION FILED APR.15, 1913.

mawm Patented Jan. 20,1914

2 SHEETS-SHEET 2.

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urrah stares parser men BE NGT M. WfHANSON, OF HAR'RFORD, CONNECTICUT, ASSIGNOR T PRATT & WHITNEY COMPANY, OF HARTFORD,

CONNECTICUT. A COREORATION OF NEW JERSEY.

a METAL-REDUCING MACHINE.

Specification of Letters Patent.

Application filed April 15, 1913. Serial No. 761,271.

State of Connecticut, have invented certain new and useful Improvements in Metal-Re ducing Machines, of \iihich the following is a specification.

[ing the Work, turn tables This invention relates to metal-reducing machines, one of the primary objects of the invention being to provide a machine of this character having greater efficiency than those generally in use and by which the work can be readily and quickly mounted and dismounted.

The invention comprises other features of novelty and utility which with the foregoing will be set forth at length in the following description wherein I will outline in detail that one of the several forms of embodiment of the invention which I have selected for illustration in the drawings accompanying and forming part of the present specification, this-showing being made to enable those skilled in the-art to practise the invention. From this statement it will be clear that I do not restrict myself to such disclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings. Figure 1 is a side elevation partly in section, of a metalreducing machine involving my invention. Fig. 2 is a top plan view partly in section,

of work supporting means, the reducingmember removed. Fig. 3 is a longitudinal section on the line 3-3 of Fig. 2. Fig. 4 is a transverse section on the line 4- of Fig. 2.

Like characters refer to like parts throughout the several figures ol the drawings.

I provide means whereby'a metal-reducing member can operate simultaneously on several pieces of work, and owing to this condition increase. materially the etliciency of the machine as compared with those of the old type. Any desirable number of pieces of work may be concurrently reduced, although in the showing made there are two work-holders provided. The work-holders and the reducing-member may vary as to nature, although as a means for directly sustainact satisfactorily while the reducing member may consist of agrinding wheel of emery or its equiva-' lent, which form of wheel is customarily used for grinding surfaces, being in fact familiarly known as surface grinding wheel. The work-holders are preferably opposite the reducing member when in work ing relation, and I prefer also that the working surface of the reducing member overlap simultaneously the work-supporting 'portions of the work holders whether they be in the form of turn-tables or some other devices. In addition to increasing the etliciency of the machine as already alluded to, I can bring to a standard size, several pieces of work which vary in depth or other dimensions. I prefer'also that the reducing member and Work holders be relatively mova'ble transversely of the axis of rotation of the reducing member which result is conveniently secured by mounting said workholders on a traveling carriage or table.

The different operative parts of the machine may be supported by any suitable framework, that shown comprising, the base '2 and the column or standard 3 rising from said base-or bed, the reciprocatory or traveling platen 4: being mounted for movement upon said base or bed. Fastened in some suitable way, as by bolting, to said carriage or platen at, is the plate 5 which carries the work holders or supports (3 and 7 which, althdugh as shown as consisting of turn tables, might be of any other desirable character.

As the two turn-tables 6 and 7 are the same in construction, mounting and operation in the present instance, a detailed description of such features with respect to one, will apply to the other, and in this con nection specific reference may be had. to the turn table 6. The turn table 6 is mounted upon the supporting body 8 which has an approximately centralopening to rotatively receive the pendent hollow or tubular shaft or journal 9 of said turn table, the latter also being provided with a face-plate 1O fastened suitably rigidly in place as by screws 11. To this face plate 10 the work is directly fastened by clamps, bolts or any of the other means now commonly employed for this purpose. Between the body of the turn table ii and the supporting body 8 there may as shown be interposed the wear ring 12 of somesuitable material.

The rotary shaft 18 supported by suitable hearings on the plate a presents a suitable v are connected to each other for instance by 5 connected as by gearing, with the two turn tables 6 and 7 for simultaneously rotating the same. Surrounding the shaft .13 are axiallyalined bushings 15 and 16, the adjacent ends of-which are separated or spaced from each other for a purpose that will hereinafter appear. The supporting bodies 8 are shown provided at their inner ends w' h half sleeves 17 whichembrace the bushlng 18 which incloses the axially alined bushings and 16.- The bushings 15 and 18 the screw 19 which latter is also utilized to hold in place the stub or thrust shaft 20 between which and the shaft 13 the anti-friction ball 21 is interposed. The bushing 18 is also united with the bushing 16 for instance by the screw 22. In view of the construction. described the end thrust of the shaft 13 is applied equally to the two bushings 15 and 16. Such thrust is initially ape gilied to the ball 21 being transmitted from the latter to the stub or thrust shaft 20 and through the screw 19 to the bushing 18 which owing to its described connection with the bushing 16 imparts. such thrust also to the latter.

Means; are provided, such as by divided boxes 23, for maintaining the supporting bodies 8 in operative relation with'the pivot or bushing 18, and .these divided boxes,the sections'of which are held removably assembled by screws or bolts 24:, surround the terminal portions of the half sleeves, 17 to maintain the latterin proper relation with said bushing 18. The two supporting bodies can, therefore, be tipped or tilted about the axis of the shaft 13 to angularly adjust the turn tables. In the construction shown screws as 25 are tapped into the under sides of the two supporting bodies 8 near their outer terminal portions and bear upon the upper surface of the plate 5; by the manipulation of these two screws 25 the two supporting bodies can be readily adjusted and preferably the adjusted relation is positively maintained in some suitable manner as by the holding or check screws 26 also tapped into the supporting bodies and which are adapted to force the shoes or blocks 26 against-the adjusting screws 25to maintain the desired relation.

In the 'organizationshown the two turntables are rotated by worm gearing and the shaft 13 is represented as provided wit-h a worm 27 in mesh with the worm gears 28 located in chambers in the under sides of the respective supporting bodies 8 and fastened to the respective hollow shafts or journal members 9 by screws 29 or in some other as suitable manner. It will, therefore, be clear that when the shaft 13 is rotated the two -turn tables 6 and 7 through the intermediate gearing will be simultaneously rotated. The open under sides of the two bodies 8 can as shown, be closed by plates 30 and the screws 25 to which I have referred extend through perforations in these plates. It will be seen that the place of mesh between the worm 27 and the two gears 28 is between the inner ends of the bushings 15 and 16; and it will be also seen that the outer bushing .18 has diametrically opposite slots 31 through which the rim portions of the two worm gears'28 extend to mesh with the worm.

Any suitable means may be provided for rotating the shaft 13, the following having been found satisfactory: Fastened to the rear of said shaft 13 is the beveled gear 52 in mesh with the beveled gear 53 fastened to the shaft 54 carried byan arm 55 on the framing ofthe machine. Said shaft 542 has keyed or otherwise fastened to it a pulley 56 connected by a belt 57 with the pulley 58 fastened to the shaft 59 supported by the arm 60 on the framing and driven by a belt 61 around the pulley 62 also fastened thereto. The belt 61 is preferably, but not neces sarily continuously operative, the same statement applying to the two turn tables 6 and 7 which through the intermediate described parts receive their-motion from said belt 61. i

The grinding or reducing member is denoted by 32, and although it is shown as being above the two work holders 6 and 7, this is not essential in all cases. In the construction shown the axis of rotation of said reducing member is substantially parallel with the axes of rotation of the two workholders or turn tables 6 and 7. Isay substantially parallel in that the two tables are susceptible of angular adjustment which although quite desirable is not always necessary. It will be noted that the working surface of the grinding wheel or disk 32 overlaps the work supporting portions of the two turn tables 6 and 7 and that although this overlapped relation continues ap roximately as far as the axis of motion of each of the turn tables, this may not be required in all cases, one of the prime considerations being as intimated that the working surface ofthe tool overlap the work supporting portions of the several work supports which may be obtained for instance, by having said tables opposite the tool. Owing to the relation of the wheel with the two turn tables, I can grind the work in such manner that the faces of. the work when ground, will be at an exact right angle to the axis of rotation. of the reducing wheel or the ground surface of the work can be either convexed or concaved, or one piece can be groundfiat and another concaved or convexed, or one concaved and another convexed. As al- I ready intimated there may be any number of ostess 4 to which reference has already been made,

constituting a main work support or holder. It will be perceived that the space between the two auxiliary work supports 6 and 7 and the reducing member 32 is'open and unobstructed, by reason of which I can freely relatively shift the said auxiliary-work holders and reducing wheel transversely of the axis of rotation of said reducing wheel in order to facilitate the applicationof work in the rough and the removal of the finished work from said auxiliary work holders orsupports. As intimated this result can be obtained either by laterally moving the reducing wheel or by moving the said auxiliary work holders in a direction transverse to the axis of rotation of said reducing wheel, but I prefer that the result in question he obtained by simultaneously shifting said auxiliary work holders, which is one of the reasons that I mount them upon a shiftable main support of which the platen or carriage 4 is one of several illustrations. As to this aspect of the case, therefore, it will be evident that the relation is broad, not residing in the construction illustrated in the drawings.

In the organization illustrated the reducing wheel 32 is fixed to the shaft supported by the adj ustable bracket 34 hereinafter described, saidshaft bein equipped with collars and 36 engaging said bracket or hearing 34. The upper end of said shaft 33 has a vertical sliding movement through the bracket or bearin 37 from which it will be clear that the shaft of the reducing wheel 32 extends upward therefrom, while the shafts of the two auxiliary work supports or turn tables 6 and 7 extend downward therefrom. The shaft 33 can be driven in any desirable manner, for instance by the belt 38 extending around a pulley 39 splined to said shaft 33 and guided between its ends by a sheave 40 on the column 3. I11 practice the reducing wheel is continuously driven, although it may be intermittently operated if desired.

It will be clear that the reducing wheel 32 and shaft 33partake of the movements of the adjustable bracket 34, so that when the latter is shifted the reducing wheel will be either raised or lowered, said reducing wheel during the reducing operation being prefer ably given a feed movement which in the organization shown is in a downward direction which is preferable although not essential.

he column 3 has ways guide the bracket 34 which may be operated in any desirable manner; the means shown for this purpose will now be described. Fastened to the column is the stationary rack 41 in mesh with the pinion 42 fastened to the shaft 43 rotativeiy supported by the able in a direction transverse to receive and bracket 34, said shaft 43 also having fixed to it a worm gear 44 in mesh with the worm 45 rigid with the shaft 46 rotated in any suitable manner. During the reducing operation the shaft 46 is being rotated, so that through the intermediate described parts the reducing wheel 32 will be advanced to grind the pieces of work on the several work holders 6 and 7.

Any suitable means may be provided for moving the carriage or main work support 4 on its ways on the bed 2, it being understood that said movement is from side to side of the bed; the means shown for this purpose will now be set forth. Said main support 4 is shown provided with a depending flange 47 extending through an opening in the .top of said bed 2 and having fastened to it a rack 48 in mesh with the pinion 49 fastened to the shaft 50. It will be clear that by rotating said shaft 50 the carriage or platen 4 can be shifted along the bed so as to get the work holders 6 and 7 from under the reducing wheel 43 for. the purpose of mounting work to be ground on said work holders or for clismount-ing work that has already been ground. The shaft ,50 can be operated either by power or hand as common in this and allied arts.

That I claim is: 1. In a machine of the class described, the combination of a plurality of independentlyadjustable work supports, and a rotary reducing member common to said Work sup-' ports and movable in the direction of its axis of rotation.

2. In a machine of the class described, the combination of a plurality of work supports, a rotary reducing member common to said supports, and means for moving said supports transversely of the axis of rotation of the reducing member.

3. In a machine of the class described, the combination of a plurality of work supports, a rotary reducing member to act simultaneously upon several pieces of work carried by the respective supports, and a support upon which said work supports are mounted, movto the axis of rotation of said reducing member.

' 4. In a machine of the class described, the combination of a plurality of work supports,

a reducing member opposite the work supports to act simultaneously upon several \pieces of work carried thereby, the space be tween the work supports and reducing member being open and unobstructed, means for supporting said reducing member opposite the portion thereof adjacent to the work supports, and means for supporting the work supportsopposite the parts thereof adjacent the reducing member.

5. In a machine of the class described, the

combination ofa rotary shaft, a pair of adjusteblesupports movable about said shaft active surface of the reducing member simultaneously overlapping the work supporting portions of the turn tables, and

means operable by said shaft for simultaneously rotating the turn tables.

6. In a machine of the class described, the combination of a rotary shaft, a bushing surrounding said shaft, a pair of supports provided with half sleeves embracing said bushing, divided boxes surrounding the half sleeves to maintain the same in assembled relation with said bushing, turn tables on said supports, means operable by said shaft for simultaneously rotating the turn tables, and a reducing member disposed opposite the turn tables, the active surface of the reducing member simultaneously overlapping the work supporting portions of both turn tables.

7. In a machine of the class described, the combination of a rotary shaft, a bushing surrounding said shaft, a pair of supports having half sleeves fitted against and turnable upon said bushing, means for holding the half sleeves in assembled relation with .said bushing, turn tables on said supports,

shaft to said turn tables for simultaneously rotating the latter.

with partial'sleeves fitting against and turnsame in assembled relation with said bushing, turntables on the. respective supports, and means operable by said ing the turn tables.

combination of a rotar shaft, a pair of bushings inclosing the s aft and'separated from each other, a thrust shaft disposed within and connected to one of the bushings, an anti-friction ball between the two shafts, a second bushing inclosing the other bushings and rigidly connected to them, a worm fastened to said shaft between the ends of gears in mesh with said worm, the outer worm gears, a pair of adjustable supports movable about the axis of said rotary shaft, and turn tables on the respective supports, rigidly connected with the respective worm gears.

in presence of two witnesses.

BENGT M. W. HANSON.

Witnesses:

W. M. S'roRRs, C. M. GELLERT.

combination; of a rotary shaft, a bushing. surroun'ding said shaft, supports providedr ingupon said bushings, s lit boxes inclosing I the said partial sleeves, or maintaining the 9. In a machine of the class described, the

bushing being slotted for the passage of said i In testimony whereof I afiix my signature shaft, forv r'otatthe first mentioned bushings, a pair of-worm 

